I think it's a clogged pore. Herpes and STD's don't fade and reappear. My advice is to let the spot be and not examine it closely so it can heal, which it can do without any treatment. It may take several weeks for the redness to fade completely.
Take care.
Dr. Rockoff
I have the same kind of bump described here but mine is white. It's more like a small, round, white spot in the middle of the penis head. It appears to be within the skin. I received oral sex about a week ago. That's the only thing that comes to mind, which may have caused this. I'm also uncircumcized.
I appreciate any input on this.
Thanks.